This EA you are referring seems to be a simple grid EA, that simply use to trade trades Longs only. It made profit during rising Gold prices and blow the accounts when market reversed.
Ours (Drive Gold) trades in both directions. It follows the Trend as Trend is our friend. This account is successfully running since December 2012 to date when Gold price had reasonable movements from $1700 to 1190$.
This account is one of our high risk accounts in our fund managed business (has gained 472%), you can see how much profit made from gold trades.